ASCO Model 138 (Edco RJA-RJD Series) Surge Protective Device

The ASCO Model 138 incorporates female jacks in and out. The ANALOG Model 138 voltage clamp is set for C.O. Trunks and Analog Telephone Extensions (with ring in voltage), and the DIGITAL Model 138 voltage clamp is set for Digital Extensions (no ring in voltage).

ASCO Model 138 (Edco RJA-RJD Series) Surge Protective Device

The ASCO Model 138 incorporates female jacks in and out. The ANALOG Model 138 voltage clamp is set for C.O. Trunks and Analog Telephone Extensions (with ring in voltage), and the DIGITAL Model 138 voltage clamp is set for Digital Extensions (no ring in voltage).

Downloads

*To see model-specific downloads, you will need to go to the model-specific product page by selecting the model name in the specifications chart above.

Features

<1 nanosecond response time

Solid-state resettable fuses – PTCs

Silicon breakover technology

Low capacitance

Line-to-line protection

Accommodates RJ-11 jack

Tip & ring to ground protection

CAN/CSA C22.2, No. 226-92 compliant

UL 497A listed

4 pair protection

5 year warranty

Benefits

Protects line-to-line, as well as tip and ring to ground.

Responds quickly to transients.

Exhibits low capacitance to support high-speed data rates

Services & Support

Support

Frequently Asked Questions

Q

What is the maximum operating voltage of the ASCO Model 138 series?

A

The ASCO Model 138D055S200SRJN0 has a maximum operating voltage of 48 VDC and is intended to protect four pair digital phone lines. ASCO model 138D280S200SRJN0 has a maximum operating voltage of 220 and is intended to protect analog and central office telephone extensions.

Q

What connection type does the ASCO Model 138 series use?

A

The ASCO Model 138 series uses RJ-45 female jacks on the input and output.